How to solve the problem that SyntaxEditor removes the same node multiple times?

[NMSAzulX]

Hello, everyone, I don't know how to describe this scene, but I found this problem and can't solve it!

 var editor = new SyntaxEditor(root, new AdhocWorkspace());
editor.RemoveNode(root.Usings[3]);
editor.RemoveNode(root.Usings[3]);
 var r = editor.GetChangedRoot();  //--> System.NullReferenceException:“Object reference not set to an instance of an object.”

[CyrusNajmabadi]

The editor api doesn't support removing the same node multiple times. Consider changing your code to not call editor.RemoveNode(root.Usings[3]); twice.

[NMSAzulX]

OK, Thank you!